<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="@/assets/login.jpg" alt="">
      </div>
      <!-- 登录表单区域 -->
      <el-form ref="loginFormRef" label-width="80px" label-position="left" class="login_form" :model="login_form" :rules="rules">
        <!-- 用户名 -->
        <el-form-item label="用户名" prop="username">
          <el-input prefix-icon="iconfont icon-user" v-model="login_form.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item label="密码" prop="password">
          <el-input prefix-icon="iconfont icon-3702mima" v-model="login_form.password" type="password"></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: 'MyLogin',
  data() {
    return {
      login_form: {
        username: 'admin',
        password: '123456'
      },
      rules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 1, max: 10, message: '长度在 1 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 3, max: 15, message: '长度在 3 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 重置按钮
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields()
    },
    // 登录按钮
    login() {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('/login', this.login_form)
        // console.log(res)
        if (res.meta.status !== 200) {
          return this.$message.error('登录失败！')
        }
        this.$message.success('登录成功！')
        // 1. 将登录成功之后的 token，保存到客户端的 sessionStorage 中
        window.sessionStorage.setItem('token', res.data.token)
        // 2. 通过编程式导航跳转到后台主页，路由地址是 /home
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang='less' scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  position: absolute;
  left: 50%;
  top: 50%;
  // margin-left: -225px;
  // margin-top: -150px;
  transform: translate(-50%, -50%);
  background-color: white;
  .avatar_box {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    border: 1px solid #eee;
    box-shadow: 0 0 10px #ddd;
    padding: 10px;
    position: absolute;
    transform: translate(-50%, -50%);
    left: 50%;
    background-color: white;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
    }
  }
  .login_form {
    position: absolute;
    bottom: 0px;
    width: 100%;
    padding: 0 30px;
    box-sizing: border-box;
    .btns {
      display: flex;
      justify-content: left;
      // transform: translateX(50px);  ???
      /* justify-content: center;
      .el-form-item__content {
        margin-left: 0 !important;
      } */
      padding: 0 30px;
      box-sizing: border-box;
      .btns {
        display: flex;
        justify-content: left;
        transform: translateX(50px);
        /* justify-content: center;
        .el-form-item__content{
          margin-left: 0 !important;
        } */
      }
    }
  }
}
</style>
